Caused by: java.lang.IllegalAccessError: class sun.reflect.GeneratedConstructorAccessor25 cannot access its superclass sun.reflect.ConstructorAccessorImpl    at sun.misc.Unsafe.defineClass(Native Method)    at sun.reflect.ClassDefiner.defineClass(ClassDefiner.java:63)    at sun.reflect.MethodAccessorGenerator$1.run(MethodAccessorGenerator.java:399)    at java.security.AccessController.doPrivileged(Native Method)    at sun.reflect.MethodAccessorGenerator.generate(MethodAccessorGenerator.java:395)    at sun.reflect.MethodAccessorGenerator.generateConstructor(MethodAccessorGenerator.java:94)    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:48)    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)    at java.lang.reflect.Constructor.newInstance(Constructor.java:534)    at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:608)    ... 40 more在junit測試時沒有問題，使用weblogic時報以上錯誤，tomcat沒有問題。網(wǎng)上沒有找到有用的信息。請問這個問題是什么原因造成的？